Why is UseEffect called all the time when the dependency is an array of one object ?

I have one app which add data with a POST http request.

I want to useEffect to reload the data which dispatch a GET http request with onGetData. the problem is it is called all the time.

It seems to be because the dependencies of useEffect is one array of one object reference. 
And this object reference is changed each time we map from the redux state to the component props (in mapStateToProps).

What can I do to either avoid useEffect called all the time? or Can I add another check instruction before calling onGetData.

Thanks for your help :)

 useEffect(() =>

 OnGetData('/MyData/Load')), 
 [myData]);
 
 function mapStateToProps(state) {
 
 return {
 myData: state.myData
 };
}